/Engine/Source/Runtime/Engine/Classes/GameFramework/LightWeightInstanceStaticMeshManager.h
Attempt to delete the given static mesh instances.
True if any instances were deleted, false otherwise.
virtual bool DeleteSMInstances ( [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FSMInstanceId](API\Runtime\Engine\Elements\SMInstance\FSMInstanceId) > InstanceIds )